總結(jié) |
Protein-tyrosine Phosphatase H1 (PTPH1) has recently been identified as a specific p38γMAPK phosphatase which is mediated through PDZ interaction (Hou et al., 2010). Ras has beendemonstrated to increase both p38γand PTPH1 protein expression, and there is a coupling of increasedp38γand PTPH1 protein expression in primary colon cancer tissues (Hou et al., 2010). Phosphorylation ofPTPH1 at Ser459 leads to PTPH1 stabilization, which plays an important role in Ras oncogenesis and stressresponse (Hou et al., 2012). Additionally, phosphorylation of PTPH1 Ser459 reveals a novel mechanism bywhich MAPK signals through PTPH1 to regulate cellular response (Hou et al., 2012).
|